Still.



PATBNTBD MAR. 24, 1903; o. H. MUCORMIGK.

STILL.

APPLICATION FILED DBO. 4, 19024.

2 SHEETS-SHEET 1.-

E0 MODEL.

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W/f/VESSES BLM In: Nonms Pneus cu. PHOTO-uma., wAsHmcnoN, n. c.

No. 723.709. PATBNTBD MAB.. 24, 1903.

' o. H. MUGURMICK. 4

' STILL.

APPLICATION FILED DEO. 4, 1902.

No MODEL. z slums-sanne'. l

? `K rfa-l 3 e u 5 o 17 WJTNESSES: JNVENTOR 1H: mams PETERS co..wom-Limo., wASmNuroN. D. c.

any suitable manner.

UNITED l STATES PATENT OFFICE.

CHARLES H. MCCORMICK, OF YORK, PENNSYLVANIA.

STILL.

SPECIFICATION forming part of Letters Patent No. 723,709, dated March24, 1903.

Application filed December 4, 1902. Serial No. 138,898. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES H. MCCOR- MICK, a citizen of the UnitedStates, residing at York, in the county of York and State ofPennsylvania, have invented new and useful Improvements in Stills, ofwhich, the following is a specification. Y

This invention relates to the general class of stills, but isparticularly designed for use in distilling pitch or other similarmaterial; and the object of the invention is to provide a still whichwill effectively separate the coarser constituents from the finer onesin a more perfect manner than has been accomplished heretofore. In mostof the stills now generally employed for thisy purpose the tire islocated immediately beneath or adjacent to the still, making itpractically impossible to regulate the temperature Within the still.

Much inconvenience also results fromthe fact that the fires frequentlyhave to be drawn tocool o the still to prevent an explosion. By thepeculiar novel arrangement provided by me these serious defects will beobviated and a more perfect still will be provided.

In the drawings, Figure l represents a vertical longitudinal sectionalview through a still constructed in accordance with my invention. Fig. 2is an end view of the same, and Fig. 3 is a vertical cross-sectionalview through the still and its support.

The reference-numerals 1 and 2 designate the two side Wallsof a supportfor the still, which may be constructed of masonry or in The stillcomprises a cylindrical receptacle 3, provided at its top with anentrance dome 4, normally closed by a plug or cap 5. Arranged within thereceptacle 3 areaseries of parallel tubes 6, each of which is supportedabove the bottom of the receptacle 3 by a plurality of smaller tubes 7,which are vertically arranged and in communication with the steam-space8, formed by the outer shell or casing 9. The outer casing conforms tothe shape of the receptacle 3 for a portion of its circumference and isconnected at its ends by means of inturn flanges l0 and ll. By thismeans the receptacle 3 is mainly enveloped or disposed in concentricrelation to an annular chamber for a purpose which will be presentlyexplained, and at the same time the top portion of the receptacle 3 isrendered freely accessible and the cost of manufacture of the entiredevice is reduced without detracting from the efficiency thereof. Aswill be seen by reference to Figs. 2 and 3, the outer casing or shelldoes not eX- tendentirelyaronnd the receptacle 3, but terminates nearthe'top thereof, forming an arcuate steam-space 8. A suitable supplypipel2 is in communication with a steamboiler (not shown) and dischargesinto the steam-space formed by the receptacle 3 and the outer shell 9,whereby steam can be admitted into the space 8 to pass up through thevertical pipe 7 and into the horizontallyarranged tubes 6, so as to heatthe interior of the receptacle 3 to a determined degree. In order todischarge or utilize the dead steam, I provide an outlet-pipe 13,depending from the bottom of the outer casing 9, both of the pipes l2and 13 being provided with valves whereby the supply and exhaust can becontrolled. A third pi e 14 leads from the bottom of the receptac e 3and is provided with a valve l5, so that the refined products can bedrawn o into buckets or receptacles pro-- vided for its reception. Thesu pporting-arms 16 and 17 can be fastened to the exterior casing at anysuitable point; but preferably they will be rivetedto the anges 10 and1l and will rest upon the top edges of the supports l and 2.

The reference-numerals 18 and 19 designate two manholes. for thereceptacle 3 and the outer shell 9, respectively. These manholes are forthe purpose V'of permitting access to the interior of the receptacle andouter shell, whereby foreign substances can be removed therefrom or forthe purpose of repairing the same. It will be observed that all oftheheat provided for the interior ofthe receptacle 3 will be furnished bythe tem perature of the steam, whereby the heat will be evenlydistributed over the side and end walls of the receptacle and in theinterior thereof through themedium of the vertical pipes 7 and thehorizontal tubes (i. The steam-boiler furnishing the heat may be of anydesired construction and will be located at a point dis-- tant from thestill, so as to diminish the liability of an explosion which might occurif the re was in close proximity to the still. The supply of the steamcan be controlled by IOO suitable valves, whereby the temperature withinthe still can be regulated.

It will be apparent that a still Constructed in accordance with myinvention will be cheap. durable, and efeient and will readily serve thepurpose for which it is intended.

Having.r thus deseribertl the invention, what iS Clai med as new iS ln astill, the combination of an inner Shell or easing provided with aseries of longitudinal parallel tubes ti at the center thereof of lesslength than the lQhell and individually connected with the bottomportion of the shell by pipes to provide a greater heating area withinthe shell or easing, eaeh tube beingr independent ofthe others, an outershell o r easing mainly Surrounding!` the inner 'Shell or casing andhaving its upper terminals inwardly directed and secured to the upperportion of the outer surface of said inner shell or easing to expose thetop of the latter, the upper part of the inner shell or easing ex posedby the outer shell or easing having an entrance-dome, the pipesConnected to the tubes G opening through the lower portion of the innershell or casingr and forming means of comm unieation With the chamberprovided by the outer shell or casing, and supply and exhaust pipesrespectively connected to the lower portion of the outer shell orcasting` and the similar portion of theinnershell oreasing.

In testimony whereof I affix my signature in the presence of twowitnesses.

CHARLES H. MCCORMICK.

\Vi tnesses:

B. R. PAXTON, J. F. D. BLACK.

